"Lee" wrote in message
o.uk...
Is there any optimum height for a 3ft dia magloop, or is it
dependent on
frequency??.

I have mine planted in the lawn with the top about 6ft from the
ground (on a
rotator!)
and was curious whether to work it against ground or put it at the
top of
the tower,
or have i completely lost the plot???, Heh heh........

Surprising how cheaply a magloop can be built for and after 12
months it
still works well!!.

Thanks.....

Lee.......G6ZSG.....

=========================================
Lee,

There is no optimum height for a magloop.

Loss induced in the ground reduces as height above ground increases.

When the height of the bottom of the loop is more than the loop
diameter, loss in the ground can be considered negligible.

This is modelled in program MAGLOOP4 which can be downloaded from the
website below and run immediately.
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Regards from Reg, G4FGQ
For Free Radio Design Software go to
http://www.btinternet.com/~g4fgq.regp
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